diff --git a/src/serve.py b/src/serve.py
index a865c7d..d47fe5b 100644
--- a/src/serve.py
+++ b/src/serve.py
@@ -28,28 +28,34 @@ logger.setLevel(PYINFRA_CONFIG.logging_level_root)
 def process_request(request_message):
     dossier_id = request_message["dossierId"]
     file_id = request_message["fileId"]
-    logger.info(f"Processing {dossier_id=} {file_id=} ...")
     target_file_name = f"{dossier_id}/{file_id}.{request_message['targetFileExtension']}"
     response_file_name = f"{dossier_id}/{file_id}.{request_message['responseFileExtension']}"
+    logger.info("Processing file %s w/ file_id=%s, and daossier_id=%s", target_file_name, file_id, dossier_id)
 
     bucket = PYINFRA_CONFIG.storage_bucket
     storage = get_storage(PYINFRA_CONFIG)
 
+    logger.debug("loading model pipeline")
     pipeline = load_pipeline(verbose=IMAGE_CONFIG.service.verbose, batch_size=IMAGE_CONFIG.service.batch_size)
 
-    if not storage.exists(bucket, target_file_name):
-        publish_result = False
-    else:
-        publish_result = True
+    if storage.exists(bucket, target_file_name):
+        logger.info("fetching file for file_id=%s, and daossier_id=%s", file_id, dossier_id)
         object_bytes = storage.get_object(bucket, target_file_name)
         object_bytes = gzip.decompress(object_bytes)
+
         classifications = list(pipeline(pdf=object_bytes))
+        logger.info("predictions ready for file_id=%s, and daossier_id=%s", file_id, dossier_id)
 
         result = {**request_message, "data": classifications}
         storage_bytes = gzip.compress(json.dumps(result).encode("utf-8"))
+
+        logger.info("storing predictions for file_id=%s, and daossier_id=%s", file_id, dossier_id)
         storage.put_object(bucket, response_file_name, storage_bytes)
 
-    return publish_result, {"dossierId": dossier_id, "fileId": file_id}
+        return {"dossierId": dossier_id, "fileId": file_id}
+    else:
+        logger.info("no files found for file_id=%s, and daossier_id=%s", file_id, dossier_id)
+        return None
 
 
 def main():